4.3BSD - /usr/src/usr.lib/libI77/rewind.c

   1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)rewind.c	5.2	7/30/85
   7:  */
   8: 
   9: /*
  10:  * rewind.c  -  f77 file rewind
  11:  */
  12: 
  13: #include "fio.h"
  14: 
  15: static char rwnd[]  = "rewind";
  16: 
  17: f_rew(a) alist *a;
  18: {   int n;
  19:     unit *b;
  20: 
  21:     lfname = NULL;
  22:     elist = NO;
  23:     external = YES;         /* for err */
  24:     lunit = a->aunit;
  25:     errflag = a->aerr;
  26:     if(not_legal(lunit)) err(errflag,F_ERUNIT,rwnd)
  27:     b = &units[lunit];
  28:     if(!b->ufd) return(OK);
  29:     lfname = b->ufnm;
  30:     if(!b->useek) err(errflag,F_ERNOBKSP,rwnd)
  31:     b->uend = NO;
  32:     if(b->uwrt)
  33:         if(n=t_runc(b,errflag,rwnd)) return(n);
  34:     rewind(b->ufd);
  35:     return(OK);
  36: }

Defined functions

Defined variables